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What is the difference between `new Object()` and object literal notation?
...
On my machine using Node.js, I ran the following:
console.log('Testing Array:');
console.time('using[]');
for(var i=0; i<200000000; i++){var arr = []};
console.timeEnd('using[]');
console.time('using new');
for(var i=0; i<200000000; i++){var arr = new Array};
console.timeEnd('using new');...
How to randomly sort (scramble) an array in Ruby?
I'd like to have my array items scrambled.
Something like this:
5 Answers
5
...
How can I do an asc and desc sort using underscore.js?
...[1, 2, 3]
But you can use the .reverse method to get it descending:
var array = _.sortBy([2, 3, 1], function(num) {
return num;
});
console.log(array); // [1, 2, 3]
console.log(array.reverse()); // [3, 2, 1]
Or when dealing with numbers add a negative sign to the return to descend the list...
How to filter object array based on attributes?
I have the following JavaScript array of real estate home objects:
16 Answers
16
...
What does Ruby have that Python doesn't, and vice versa?
... a yield statement.
For example, a simple definition of an each method on Array might be something like:
class Array
def each
for i in self
yield(i) # If a block has been passed, control will be passed here.
end
end
end
Then you can invoke this like so:
# Add five ...
How to change the session timeout in PHP?
... }
}
$handler = new FileSessionHandler();
session_set_save_handler(
array($handler, 'open'),
array($handler, 'close'),
array($handler, 'read'),
array($handler, 'write'),
array($handler, 'destroy'),
array($handler, 'gc')
);
// the following prevents unexpected effects ...
In-Place Radix Sort
...er language. It's in-place but requires 2 * seq.length passes through the array.
void radixSort(string[] seqs, size_t base = 0) {
if(seqs.length == 0)
return;
size_t TPos = seqs.length, APos = 0;
size_t i = 0;
while(i < TPos) {
if(seqs[i][base] == 'A') {
...
How can I improve my paw detection?
...) but this isn't quite working properly for some reason...)
Threshold the array so that you have a boolean array of places where the pressure is over some threshold value (i.e. thresh = data > value)
Fill any internal holes, so that you have cleaner regions (filled = sp.ndimage.morphology.binary...
What does axis in pandas mean?
...n, axis==None by default, which computes the mean value over the flattened array) , in which axis=0 along the rows (namely, index in pandas), and axis=1 along the columns. For added clarity, one may choose to specify axis='index' (instead of axis=0) or axis='columns' (instead of axis=1).
+---------...
How do I partially update an object in MongoDB so the new object will overlay / merge with the exist
...ote a function something like that:
function _update($id, $data, $options=array()){
$temp = array();
foreach($data as $key => $value)
{
$temp["some_key.".$key] = $value;
}
$collection->update(
array('_id' => $id),
array('$set' => $temp)
...